Warp stop mechanism for looms



Oct. 2 ,1923.

. 1,469,758 E. s. sfmMPsoN WARP STOP MECHANISM FOR LOOMS 'Filed Dec. 29. 11:21 s Sheets-Shani Oct. 2 1923. 1,469,758

E. s. STIMPSON WARP STOP MECHANISM FOR LOOMS Filed Dec. 29, 1921 s Sheets-Sheet 2 E. s. STIMPSON WARP STOP MECHANISM FOR LOOMS Filed Dec. 29, 1921 3 S e'lzs- -shee'la 3 lg- 57 e931 8 1 29 29' 47 V n 30 I h 57 '30 30 a 76 v v l K 4. Dir/6212. 01 6mg 8. W b W "ityactuation of the feeler in its detecting shown. 1

Extending between the supports 4 is a truss frame which,in the present instance of the invention, comprises the upper and lower rails 9 supported at intervals by spacing blocks .10. Theend portions of the truss frame are connected to the supports 4 by means such asthe bolts 11.

The supports 4 have lugs 12 against which the drop wire guides 7 are secured by means ofthe clips 13, substantially as in the prior patent to which reference has been made. The warp supports 8 have their ends sustained in open bearings carried by the side brackets or supports 4.

'Mounted in the bearings 14 car ied by each of the supports 4 is the rock shaft 15 carrying the arms 16, the upper end por tions of which areslotted at 17 for engage ment with the feeler carrier as will presently appear.

The rock shaft 15 has extending from it the arm 18 to which is connected the rod 19, the lower end portion of which engages one end 20 of a follower 21 pivotally mounted at 22 on the loom frame. The follower 21. has a shoe 22 .which rides upon the cam 23 mounted upon the under or cam ed parts acts by gravity to move the fee'ler .in the opposite dlrection, or, in other words,

impart to the feeler its detecting stroke, and

owing to the anti-friction devices, which facilitate'movementof the feeler, such gravstroke may be made of such light force as not to injure a drop wlre by which the feeler 1s arrested.

Secured to and extending from the rock 7 shaft 15 is the arm 27, Figs. 1 and 3, to which is connected the link 28 which acts through a train of mechanism, substantially as shown and described in the prior Stimpson patent and in the patent to Ambler, No. 885 130, dated Apr. 21. 1908, to control loom stoppage. The train of mechanism which acts in response to the movement of the arm 27 is well known, and as it forms no essential 29' which may be stamped out of sheet metal or otherwise formed, andeachone is provided with a guide slot 30 and an enlarged. head 31, all of which in the present instance, face in the same direction. So far as the broad aspects of the present invention are concerned, the drop wires 29 may be any of the various well known types, but in the present instance they are shown as of'the hairpin form, that is, portions of the drop wires are open-slotted and have the legs 32 which are passed over the warp threads a and the upper portion of the legs 32 rests upon the warp threads to thereby support the drop wires during weaving. Drop wires are sometimes provided with a separate opening'or hole through which the warp threads are passed, and either type is susceptible of use in connection with the present invention. 7 I

As will be seen from Fig. 5 the drop wire guides 7pass through the slots 30 of the drop wires, that is, each row of'drop wires has passed through it a drop Wire guide 7, and to align the drop wires for insertion of the drop wire guides, a drop wire aligning device is shown as' formed of the aligning members 33 which extend between the end members 34. The aligning members 33 are conveniently located when used in connection with the hairpin type of drop wire to enter between the leg portions 32 of the drop wires foraligning the drop wires ofthe row for the insertion of the drop wire guide. I, Eachend member or saddle 34 has con.-

nected at its ends a hanger for supporting the aligning device in itsdrop-wire-aligning position. In the present instance one end of the saddles 34 has adyustably connected thereto by a bolt on thumb-screw 35, Fig. 4,

the hanger 36 having ahooked upper portion 37 which may conveniently be hung upon-some convenient portion of the stationary part of the stop motion, but in the present instance is shown as being adapted to engage the rock shaft 15, as more clearly indicated in Figs. 4 and 5. n

The other end of the saddle 34 has adjustably connected thereto the hangers 38 which may be adjustably secured to the saddle 341 by a bolt r thumb-screw 39. Each of the hangers 36 and 38 is slotted longitudinally so that the position of the aligning bars 33 may be properly adjusted. V

In the use of the drop wire aligning device, the hangers 36 and 38 are hung upon a stationarypart of the warp stop motion and as shown in the present instance on'the rock shaft 15 and the truss frame 9 when the end supportsor brackets 4 and the parts are sition Under these conditions the warp threads cg pass Over and restupon "thewatp" 1- supportingfbar's 8 21s 'incliee-ted in'Figs: t'ahd 5. The d-fiep wires 29 ef the row: ere-then v placed upeh the werpgthreads 'c zhy'insertmg thGZd-TOP wiressuccesswelyiovei itsapprop'n ate wjarp thi'ead vith the lewer end'or leg? poi'tionof theflrop wire "en'geged i associated aligning bar 33', as il'l'u'stliate vto tilt intb different; positins, are held in g wire-guidefl which 'nfay hemmed ehdvtisef;

alignment with their s16ts 3'0 pbsitien'ed' for f the endwise insertioh'ofthe assecia'ti' drop:-

trcduced' gnd -opera-time1y asseeiated withits suppertfhg' brackets 4 the clips 13 01" ether eppropriatef' meslns; and the drop wire;

- 8 respectfivel'y,betweenthe side supports};

bread"- 01" wideilbmsz-z Infthe' fp'res'ent hi- 4 stance-this is accomplished 'by'wcentre brace; 40, 'Fig'. 1, which is seeuredftothe' 'tiuss' aligning: device may then be deb -thee; and

remevec'lfffom the 160m? It will be'eppapent thatsthe-assentblybe the" drop"Wife's and dmpwire guides is greatly feteilittted bythe drop Wirefavlig'n ring; device, end espeially is this the case when the 7' dro'pf ires are" supported upon the'warp threads Wh-iehqpass fit'o'm'the usual? Warp' beam. forwtrdl'yz of the :Wafrpfi std-p mechanism. i 1 I In" some cases it is (testable-10 lbrace the drop 3 wire gui'es" and welpzsqppo-rts 7 mid" and this is particularly advantageousj'ih j frame 9 and has sletsl in'its"u'pperedgej V which engage the l drop Wife "guises 7; '01

" through Y which" the drop wire-guides 7 be 'passedas f th'eyj" ere jmqved; endwi's'e thfough the drop wires. The centre brxce 40 1s alsb provided with a series of Openings;

between its upper "and Flower edges threu'gh which the warp supports 8 pess, the res'xflt' being; that the drop. Wire guides WTahd warp supports 8'bettvee1i the sidesbraiekets i ere stabilized and supportedih a mannjef suchthat dufilig "the 1opeiati0n "of the. 160m a nd" flexing even i "the wide 160m:

the w'al p stop: mechanism, the pertsjwilf he held" in their op'erativeipositioh Without- It may semetl'mes' I be" desirable; h1 0;

' j farther support I the reak'shaft' between Fig 2 which supports the sli s 13315 i nte'l ff When," owing to; the wide'cheieeteif "6f the 100m; the centre brace 40 is-not sutfie .flt t6 5 stabilize the parts rend-e them sse 111* preferably made": of 'I'essv depth than l the-- depthyof mdropwiregqide'fgand theinte -qa mediate braces 43," like 'the centre b'race 403 1 in" the lSt'i be? i te-rpesed/ between-the centre bi e 4 7 and" the-"side fibresl'zets iemfinasmuch asthe drop; Wire g ides bear the-fthri st of the' i e ffilediate brews-43 arekformed with slets feeler when it engttges a [cl-rep Wire; the inter o'rj opehings {14 in the upper-edges thereof? inte' 'whfi'ch the d-r' p jW'iI guide 7- may fit. The .ppjeni'n'gs 44; like" theopenihgs 4:1, iare eare secu red as; at 1 45 tdf the truss" frame, 9

T effee'ler, which deteet'sf when a drop" bers' ofwhieir'l"; the flfelr; or feelerfsas t 6; v casemayjbe;fiextend; The ease otfeeleri ovement and consequently its delibeey of stance; the feel'er eertier-f consists- "of mem- 5 g lends? heinerhber's'46 "ofithe 68181? carrier are each formed-with an arm' Ass-impugn" wh'i eh extend's zt pin c9f f6r en:

gagementiwith theslet' 17 of theactuatihg s means, substantially asmere fully-describech r '3 r pson patent tejWhieh"reference with a ehtmber '50 f01 -"an anti-ffictionidle vice be" interposed "between the side ni'emhi the present 'ihstance thegavnti-frictionfile-1f vic f'c nsist's- Of "the, balls 5. 1 contained in the coven plate 52- Which may b 'ef secured t'0 5' the side memb'ers by appropriate 1 mean anti-friction devices will be in terposedl bejtween the side -members' and the' supports [129 l! ani'iper fn'it ready m vemen bf '1 th fgel rf carriesand; fee1er' in its '-detectingu ove;2

each Of the'chembers50'ahd heldthereiniby ments w'ithb'ut th exercise'offen' amounmfr oed fc'jl'ffnj of? anti fricti'on' d vices"; the at ,ventioir is n0t restrictedtheretd' buti c templates the use ofen'y: ch'ara eter 1: f i'c tio ideviees Under these-fconid will {be real-i-l'jfi s eta-:1

'. detecting stroke; andthe feeler carrier and feeler or teelers be of considerable weight, the amount of force for giving the teeler its detecting movement will be small, and thereby obviate the liability for imparting detecting movement to the .ieeler under the conditions hereinbetore de- I Vfhen, however, the feeler in its.

scribed. detecting movement meets a wire that has been drooped by its warp thread. the feeler carrier and. feeler are more readily brought to rest owing to the small amount of force required to move the teeler by gravity in its dropped wire is notinjured; I I

The advantages of the anti-friction devices interposed between the teeler carrier and its support are peculiarly manifested where the loom is a wide or broad loom which requires that the feeler'carier and teeler be of con siderable. weight; but of coursetae present invention is not to be restrict-ed to use in wide looms. as advantages may flow. from the anti-friction device even in the more narrow looms.

The side members 46 of the teeler carrier are connected by the feelers 47, but in some cases this alonewould not impart sur'iiciently stable character to the feeler carrier as, a

whole. Consequently the present invention contemplates further uniting the side members as o't'the tecler by a truss frame 56, Fin 1 forme it may be, substantially simi- CD *lar to the truss frame 9 or the stationary portion of the warp stop mechanism. The truss frame '56 is connected at ts end portions in the present instance bybolts 57 which are shown as passed through the end portion of the truss frame andjthr'ough the angle member 58 of one of the feelers 47 see Figs. 4 and 5. I I I I 'lhe unobstructed removal of the feeler car. ler and-teeler from operative relation with the drop wires has been fully and clearly describedqin the prior Stimpson patent to which reference has been made; and when .soremoved from operative relation with the drop wires the teeler carrier and teeler in the present instance may be conveniently hung upon supports 59 projecting from the loom arch 60, and within handyreach of the loom attendant.

it is sometimes desirable'to brace the teelers intermediate theside members of the neeeyes feeler carrier, and in the present instance,

the truss frame 56 has secured thereto t-he teeler braces 61 which are disposed above the feelers. The braces 61 have the inclined slots 62, Fig. 1, which receive the upper edge portions of thev inclined feelers 47. The

braces 61 are particularly advantageous in the use of a teeler of this character for Wide looms,. though they may serve advantageous purposes also, for looms 0t diiierent width.

What is claimed is 1. In a warp stop motion for looms. the combination 01": a teelcr carriercomprising side members, a teeler supportedby the side members ofthe teeler carrier a, support at each side of the loom by which the teeler carrier is supported and on which it has sliding detection movement, rotatable antifriction devices between the side members or the teeler carrier and theside supports on which the side members of the teeler carrier slide, and means for imparting to} the teeler carrier reciprocating movements relative to the side supports.

2. In awarp stop motion for loomsythe combination of a series of drop wires normally supported by the warp threads durweaving, iteeler carrier comprising side members and a teeler supported by the side members a support at each side of theloom for supporting the side members of the teeler carrier for sliding movements thereon rotatable anti-friction devices between the side supports and the side members of the tteeler carrier. and actuator for effecting slid ing movement or the teeler carrier on the II side supports towards and from the drop wires.

3. In a warp ing sidemembers and a teeter mountedon the side members. side supports. onev at each side of the loom. for supporting the side members ot-the teeler carrier for sliding. movement thereon, rotatable -anti-trictionI devices mounted upon the side. members of the teeler carr'er and en 3 Jortino: the ieeler carrier on the side supports and an actuator for: imparting tothe tecler carriersliding movement relative to the side supports;

t. In a warp stop mechanism the combination of a teeler carri 13 a ieeler stop mechanism tor looms .the. combination of a feeder carrier comprisfor looms, l

carried thereby, iieeler carrier supports con- .structed and'arranged to support the :teeler I carrier for unobstructed removal from said supports, anti-friction devices between the teeler carrier and the teeler carrier supports acting to make sensitive slidingmovement, of the feeler carrier relative to and an actuator for sliding the on said supports. I I

5. 111 a warp stop mechanism for looms the combination of aseries of drop wires normally supported bythe warp threads during weaving, a feeler carrier, at teeler the supports, feeler ca "rler v carrying supports towardsand from the drop'wires; 6. In a warp stoprmechanism for looms,

a feeler carrier comprisin side members anti-triction devices,

r ma ns} i connected to the feeler carrier," side; supports v 'on-.:which -th e feelei carrierslides, an 'actib 1 ator for imparting slidingmovementsjtothe feeler :carrier to cause the feeler to approach. 1 and reced'e' fromjthe drop wires; and anti- P friction 7 devices for facilitating slidingf mo've'm'ent of the 'teeler ca-Pner onthe side rotatable 7 supports on which the anti-frictiondevices travel back and forth,anactuatortto'rtravels ingthefeeler carrier on its supports, and a feeler extending between the side members of the feeler carrier. V j 7.'In a warp stop'mechanism for looms,

the combination of brackets at each side of the loom frame, a series of drop wires normally supported by the warp threads between the brackets during weaving, supports connected to the brackets, a feeler carrier 7 'slidable on the supports and carrying a feeler, rotatable antiiriction devices between the feeler carrler and the supports, and an actuator for moving the feeler carrier.

' 8. In a warp stop mechanism forlOoms,

the combination of a series of dropwires, a feeler earner comprising side members, supports on which the feeler carrier is supported I for sliding movement.constructed and arranged to permit unobstructed removal of the feeler carrier, a truss frame extendlng between 'theslde members of the feeler carrier, and connected to each of them to sta-V bilize the carrier, and an actuator for imparting detecting movements to the feeler carrier. V

9. In a warp stop mechanism for looms,

the combination of a series of drop wires normally supported by the warp threads during weaving, a drop wire guide, a feeler which is actuated in its non-detectingmovement by power and in its detecting movement by gravity andadap'ted to be arrested in said detecting movement by 'a drop wire when it is released by a too slack or broken warp thread, and anti-friction devices between the feeler and its support which render the feeler responsive to light gravity actuation in its detecting movemen 10. In a warp stop mechanism for looms,

the combination of a series of; drop wires .normally supported by the warp threads Imovement towards and from the drop wire,

60. carrier-on the supports,

during weaving, supports at eachside ot' thev loom, a feeler carrier mounted for slidi'ng a truss extending between and secured to each of said supports for rigidly connecting them, and an actuator' for sliding the feeler 11. In a warp stop mechanism for looms, the combination of a series of drop wires adapted to be supported by the warp threads during weaving, a feeler having a detecting pposite.:sides ot theloomfor-supportingthe =ldr'opn wire guide, L 5a; truss, it

arts i'def-suppq between the two isupporltstfansversdy jot itl a bracebet-w n :at-he the drop wire guide,'a feeler havinga detecting anovement which i'sarrested by engagement ofa drop wirewhen itis released a slack t a or brOken Warp athread, carriers; for the" ame extendingif l feeler, and a truss frame extending-between and connecting the carriers and" movable, therewith; 13; In:a warpstop' mechanisintor loom the combination .ofa feeler carrier ,compri's' ing side members anda feel'er c-arriedthereby, said side membersfof the feeler' carrier having rotatable antrfricti'on devicesi mounted thereon, side supports for support- 7 ing the side members constructed and arranged/to perm-it unobstructedfremoval of the .feeler carrier and "antifriction devices therefrom, a series of drop wires normally supported by the warp threads' during weaving, and an actuator "forsliding the feeler carrier on the side supports. 1 I

14. A =,warp stop mechanism for looms, comprising, in comb n'atloma series of drop wires normally supported by the .jwarp threads duringweaving, a dropwire guide] 2 for guiding the'drop wires, "a feeler having a detecting movement and adapted to be ar- 'rested in said'movement by a-drop wire when it assumes an abnormal position due to a too slack or broken Warp thread, an actuator for the feeler,la support for the feeler, and anti friction devices between-the feeler and its support which render the teeler responsive to a light actuating force 7 V tending to move it.

15. warp stop mechanism' for looms,

'comprising,' in combination, a seriesof drop wires normally supported by the warp filothreads during weav1ng,- a" drop wireguide for ,gu ldlng' the drop wires, a feelerhavinga detectingimovementfand adapted to be" arrested in said movement by adrop'wirewhen it assumes an abnormal position due to a too slack or broken warpthread, a sup- L -port for the feeler, an: actuator for? the 'feeler, and anti-friction balls'between:the?a leeler-and its support which} render the i 3 feeler responsiveto. alight actuatingiorce tending tomove' it.

16 In a warpstopfmechanism, the 'conifor the drop wires,"a teeler, a, support for the feeler and "relative{ to iwhich'the 'feeler ltim l of a series of drop wirespa; g idg' 1i; has detecting movement, rotatable anti friction devices between the feeler andsaid support which render the feeler responsive. to a light actuating force tending to move it, 1 ,1

and an actuator f or the feeler,

17; In, a Warp stop mehanim for looms,

t1'16(36111bii13ti011 of a series of drop Wires, (1

sidemembers 1 and adapted t0- sustain the "feelen carrier on its support, a feeler mountred on the feeler carrier, and an actuate-refer giving the feelerJcarrier .andj feeler move- 1ne11t-m1ihesu1dsupnort. V J e In testlmonywhereoflI heveslgned my name to this. specification. V

EDWARD S. STIMPSON. 

